Garber, Peter R.
ASTD Press, 2011
Buku Teks
Garber, Peter R.
American Society for Training & Development, 2011
eBooks
Fadhlurrahman
Fakultas Ilmu Administrasi Universitas Indonesia, 2019
UI - Skripsi (Membership)
Bruce, Anne
McGraw-Hill, 2003
Buku Teks
Emerson, Brian, 1967-
American Management Association, 2008
eBooks